▎ 摘　　要

NOVELTY - The graphene composite electrode material has composite material graphene and basic cobalt carbonate as the main component. The basic cobalt carbonate is grown on the graphene surface. The weight ratio of graphene and basic cobalt carbonate is 7 to 9: 3 to 1. The graphene is composed of single-layer graphene, multi-layer graphene and reduced graphene according to any proportion. USE - Graphene composite electrode material. ADVANTAGE - The graphene composite electrode material has simple preparation process. The energy consumption is reduced. The repetitiveness is good. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a preparation method for graphene composite electrode material. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the X-ray powder diffraction of graphene composite electrode material. (Drawing includes non-English language text)